GB864683A - Improvements in or relating to loudspeakers - Google Patents

Improvements in or relating to loudspeakers

Info

Publication number
GB864683A
GB864683A GB1107958A GB1107958A GB864683A GB 864683 A GB864683 A GB 864683A GB 1107958 A GB1107958 A GB 1107958A GB 1107958 A GB1107958 A GB 1107958A GB 864683 A GB864683 A GB 864683A
Authority
GB
United Kingdom
Prior art keywords
tube
outer tube
loudspeakers
relating
acoustic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1107958A
Inventor
Patrick Bernard Cooper
David Lawrence Hillman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Decca Record Co Ltd
Original Assignee
Decca Record Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Decca Record Co Ltd filed Critical Decca Record Co Ltd
Priority to GB1107958A priority Critical patent/GB864683A/en
Publication of GB864683A publication Critical patent/GB864683A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2853Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers

Abstract

864,683. Acoustic reflectors and resonators. DECCA RECORD CO. Ltd. July 6, 1959 [April 8, 1958], No. 11079/58. Class 13. [Also in Group XXXIX] A loud-speaker is mounted at or near the top of an upright tube which is internally divided to form a folded resonant pipe by means of a substantially vertical partition, such as a second tube which may be either concentric (Fig. 1) or eccentric (Fig. 7) with the first, either the inner tube (Fig. 1) or the space between the tubes (Fig. 7) being closed at the bottom. The open lower end of the outer tube has an external flange 95 and is supported clear of the floor by three or more feet 96; it may contain an amplifier and/or an acoustic filter, e.g. a roll of corrugated board. The top of the outer tube may support a soundreflector 23 and a lamp 12, Fig. 1.
GB1107958A 1958-04-08 1958-04-08 Improvements in or relating to loudspeakers Expired GB864683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1107958A GB864683A (en) 1958-04-08 1958-04-08 Improvements in or relating to loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1107958A GB864683A (en) 1958-04-08 1958-04-08 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
GB864683A true GB864683A (en) 1961-04-06

Family

ID=9979641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1107958A Expired GB864683A (en) 1958-04-08 1958-04-08 Improvements in or relating to loudspeakers

Country Status (1)

Country Link
GB (1) GB864683A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088078A1 (en) * 1970-05-14 1972-01-07 Int Multi Sons
GB2230408A (en) * 1989-03-17 1990-10-17 Dimitris Lioupis Loudspeakers
US5105905A (en) * 1990-05-07 1992-04-21 Rice Winston C Co-linear loudspeaker system
GB2290672A (en) * 1995-09-08 1996-01-03 B & W Loudspeakers Loudspeaker systems
US5710395A (en) * 1995-03-28 1998-01-20 Wilke; Paul Helmholtz resonator loudspeaker
EP3843420A1 (en) * 2019-12-23 2021-06-30 GP Acoustics International Limited Loudspeakers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088078A1 (en) * 1970-05-14 1972-01-07 Int Multi Sons
GB2230408A (en) * 1989-03-17 1990-10-17 Dimitris Lioupis Loudspeakers
US5105905A (en) * 1990-05-07 1992-04-21 Rice Winston C Co-linear loudspeaker system
US5710395A (en) * 1995-03-28 1998-01-20 Wilke; Paul Helmholtz resonator loudspeaker
GB2290672A (en) * 1995-09-08 1996-01-03 B & W Loudspeakers Loudspeaker systems
EP3843420A1 (en) * 2019-12-23 2021-06-30 GP Acoustics International Limited Loudspeakers

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